Electrodialysis in water-ethanol solutions: Application to the acidification of organic salts

Desalination of mussel cooking juices by electrodialysis: effect on the aroma profile

“…The anionexchange-membrane provides the electric current by OH À ions (the cation-exchange membrane by H + ions) which results in the accumulation of H + ions at the surface of anion exchange membrane (OH À ions at the surface of cation-exchange membrane) in the desalting compartment. On the way to the anode, carboxylate ions reach the water dissociation layer of anionexchange membrane, and react with H + ions, being thus converted into their corresponding neutral forms which do not migrate in the electric field (Kameche, Xu, Innocent, & Pourcelly, 2003). Long chain organic acids (octanoic and nonanoic acids) being much less soluble in water than their corresponding salts, their extraction from the aqueous medium would therefore be facilitated accounting for their apparent accumulation.…”

Liquid transport through sulfonated cation-exchange membranes for different water–alcohol solutions

“…Up to now, these transport processes in ion-exchange membranes were mainly developed in aqueous media. However the use of this kind of membranes in hydro-organic media allows the opening of new and important applications, which demand the development of new ion-exchange membrane solving the important technical and commercial limitations of the current ion-exchange membranes [9][10][11][12]. This is an important research domain, which involves the study of the influence of the membrane morphology in the transport coefficient in this kind of media.…”

Ion-exchange membranes in chemical synthesis – a review

“…To overcome this, processes are conducted at elevated temperatures [179], coupled with electrodeionization in which the presence of ion-exchange resin in the diluate compartment effectively decreases the stack electrical resistance [185], or process solutions are pre-concentrated by ED [135]. BMED conducted in mixed water-alcohol mixtures (so-called two-phase bipolar membrane electrodialysis, TPBMED) allowed for production of some acids: salicylic [186], sebacic [187], and long-chain linear acids of formula C n H 2n+1 COOH, with n = 2 -7 [188] and n = 7 -15 [189].…”